Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2include ../../../build/Build.include
3include ../../../scripts/Makefile.arch
4include ../../../scripts/Makefile.include
5
6CXX ?= $(CROSS_COMPILE)g++
7
8CURDIR := $(abspath .)
9TOOLSDIR := $(abspath ../../..)
10LIBDIR := $(TOOLSDIR)/lib
11BPFDIR := $(LIBDIR)/bpf
12TOOLSINCDIR := $(TOOLSDIR)/include
13BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
14APIDIR := $(TOOLSINCDIR)/uapi
15GENDIR := $(abspath ../../../../include/generated)
16GENHDR := $(GENDIR)/autoconf.h
17
18ifneq ($(wildcard $(GENHDR)),)
19 GENFLAGS := -DHAVE_GENHDR
20endif
21
22BPF_GCC ?= $(shell command -v bpf-gcc;)
23SAN_CFLAGS ?=
24CFLAGS += -g -O0 -rdynamic -Wall $(GENFLAGS) $(SAN_CFLAGS) \
25 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
26 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT) \
27 -Dbpf_prog_load=bpf_prog_test_load \
28 -Dbpf_load_program=bpf_test_load_program
29LDLIBS += -lcap -lelf -lz -lrt -lpthread
30
31# Silence some warnings when compiled with clang
32ifneq ($(LLVM),)
33CFLAGS += -Wno-unused-command-line-argument
34endif
35
36# Order correspond to 'make run_tests' order
37TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
38 test_verifier_log test_dev_cgroup \
39 test_sock test_sockmap get_cgroup_id_user \
40 test_cgroup_storage \
41 test_tcpnotify_user test_sysctl \
42 test_progs-no_alu32
43
44# Also test bpf-gcc, if present
45ifneq ($(BPF_GCC),)
46TEST_GEN_PROGS += test_progs-bpf_gcc
47endif
48
49TEST_GEN_FILES = test_lwt_ip_encap.o \
50 test_tc_edt.o
51TEST_FILES = xsk_prereqs.sh \
52 $(wildcard progs/btf_dump_test_case_*.c)
53
54# Order correspond to 'make run_tests' order
55TEST_PROGS := test_kmod.sh \
56 test_xdp_redirect.sh \
57 test_xdp_redirect_multi.sh \
58 test_xdp_meta.sh \
59 test_xdp_veth.sh \
60 test_offload.py \
61 test_sock_addr.sh \
62 test_tunnel.sh \
63 test_lwt_seg6local.sh \
64 test_lirc_mode2.sh \
65 test_skb_cgroup_id.sh \
66 test_flow_dissector.sh \
67 test_xdp_vlan_mode_generic.sh \
68 test_xdp_vlan_mode_native.sh \
69 test_lwt_ip_encap.sh \
70 test_tcp_check_syncookie.sh \
71 test_tc_tunnel.sh \
72 test_tc_edt.sh \
73 test_xdping.sh \
74 test_bpftool_build.sh \
75 test_bpftool.sh \
76 test_bpftool_metadata.sh \
77 test_doc_build.sh \
78 test_xsk.sh
79
80TEST_PROGS_EXTENDED := with_addr.sh \
81 with_tunnels.sh \
82 test_xdp_vlan.sh test_bpftool.py
83
84# Compile but not part of 'make run_tests'
85TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
86 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
87 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
88 xdpxceiver xdp_redirect_multi
89
90TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
91
92# Emit succinct information message describing current building step
93# $1 - generic step name (e.g., CC, LINK, etc);
94# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
95# $3 - target (assumed to be file); only file name will be emitted;
96# $4 - optional extra arg, emitted as-is, if provided.
97ifeq ($(V),1)
98Q =
99msg =
100else
101Q = @
102msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
103MAKEFLAGS += --no-print-directory
104submake_extras := feature_display=0
105endif
106
107# override lib.mk's default rules
108OVERRIDE_TARGETS := 1
109override define CLEAN
110 $(call msg,CLEAN)
111 $(Q)$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
112 $(Q)$(MAKE) -C bpf_testmod clean
113 $(Q)$(MAKE) docs-clean
114endef
115
116include ../lib.mk
117
118SCRATCH_DIR := $(OUTPUT)/tools
119BUILD_DIR := $(SCRATCH_DIR)/build
120INCLUDE_DIR := $(SCRATCH_DIR)/include
121BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
122ifneq ($(CROSS_COMPILE),)
123HOST_BUILD_DIR := $(BUILD_DIR)/host
124HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
125HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
126else
127HOST_BUILD_DIR := $(BUILD_DIR)
128HOST_SCRATCH_DIR := $(SCRATCH_DIR)
129HOST_INCLUDE_DIR := $(INCLUDE_DIR)
130endif
131HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
132RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
133RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
134
135VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
136 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
137 ../../../../vmlinux \
138 /sys/kernel/btf/vmlinux \
139 /boot/vmlinux-$(shell uname -r)
140VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
141ifeq ($(VMLINUX_BTF),)
142$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
143endif
144
145# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
146# to build individual tests.
147# NOTE: Semicolon at the end is critical to override lib.mk's default static
148# rule for binaries.
149$(notdir $(TEST_GEN_PROGS) \
150 $(TEST_PROGS) \
151 $(TEST_PROGS_EXTENDED) \
152 $(TEST_GEN_PROGS_EXTENDED) \
153 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
154
155# sort removes libbpf duplicates when not cross-building
156MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
157 $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids \
158 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
159$(MAKE_DIRS):
160 $(call msg,MKDIR,,$@)
161 $(Q)mkdir -p $@
162
163$(OUTPUT)/%.o: %.c
164 $(call msg,CC,,$@)
165 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
166
167$(OUTPUT)/%:%.c
168 $(call msg,BINARY,,$@)
169 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
170
171$(OUTPUT)/urandom_read: urandom_read.c
172 $(call msg,BINARY,,$@)
173 $(Q)$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS) -Wl,--build-id=sha1
174
175$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
176 $(call msg,MOD,,$@)
177 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
178 $(Q)$(MAKE) $(submake_extras) -C bpf_testmod
179 $(Q)cp bpf_testmod/bpf_testmod.ko $@
180
181$(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ)
182 $(call msg,CC,,$@)
183 $(Q)$(CC) -c $(CFLAGS) -o $@ $<
184
185DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
186
187$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
188 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
189 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \
190 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
191 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \
192 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) && \
193 cp $(RUNQSLOWER_OUTPUT)runqslower $@
194
195TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
196
197$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
198
199$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
200$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
201$(OUTPUT)/test_sock: cgroup_helpers.c
202$(OUTPUT)/test_sock_addr: cgroup_helpers.c
203$(OUTPUT)/test_sockmap: cgroup_helpers.c
204$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
205$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
206$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
207$(OUTPUT)/test_sock_fields: cgroup_helpers.c
208$(OUTPUT)/test_sysctl: cgroup_helpers.c
209
210BPFTOOL ?= $(DEFAULT_BPFTOOL)
211$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
212 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
213 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
214 CC=$(HOSTCC) LD=$(HOSTLD) \
215 EXTRA_CFLAGS='-g -O0' \
216 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
217 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
218 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
219 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
220
221all: docs
222
223docs:
224 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
225 -f Makefile.docs \
226 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
227
228docs-clean:
229 $(Q)$(MAKE) $(submake_extras) \
230 -f Makefile.docs \
231 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
232
233$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
234 ../../../include/uapi/linux/bpf.h \
235 | $(BUILD_DIR)/libbpf
236 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
237 EXTRA_CFLAGS='-g -O0' \
238 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
239
240ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
241$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
242 ../../../include/uapi/linux/bpf.h \
243 | $(HOST_BUILD_DIR)/libbpf
244 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
245 EXTRA_CFLAGS='-g -O0' \
246 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
247 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
248endif
249
250$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
251ifeq ($(VMLINUX_H),)
252 $(call msg,GEN,,$@)
253 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
254else
255 $(call msg,CP,,$@)
256 $(Q)cp "$(VMLINUX_H)" $@
257endif
258
259$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
260 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
261 $(TOOLSDIR)/lib/rbtree.c \
262 $(TOOLSDIR)/lib/zalloc.c \
263 $(TOOLSDIR)/lib/string.c \
264 $(TOOLSDIR)/lib/ctype.c \
265 $(TOOLSDIR)/lib/str_error_r.c
266 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
267 CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \
268 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
269 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
270
271# Get Clang's default includes on this system, as opposed to those seen by
272# '-target bpf'. This fixes "missing" files on some architectures/distros,
273# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
274#
275# Use '-idirafter': Don't interfere with include mechanics except where the
276# build would have failed anyways.
277define get_sys_includes
278$(shell $(1) -v -E - </dev/null 2>&1 \
279 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
280$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
281endef
282
283# Determine target endianness.
284IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
285 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
286MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
287
288CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
289BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
290 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
291 -I$(abspath $(OUTPUT)/../usr/include)
292
293CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
294 -Wno-compare-distinct-pointer-types
295
296$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
297$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
298
299$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
300
301# Build BPF object using Clang
302# $1 - input .c file
303# $2 - output .o file
304# $3 - CFLAGS
305define CLANG_BPF_BUILD_RULE
306 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
307 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -o $2 -mcpu=v3
308endef
309# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
310define CLANG_NOALU32_BPF_BUILD_RULE
311 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
312 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -o $2 -mcpu=v2
313endef
314# Build BPF object using GCC
315define GCC_BPF_BUILD_RULE
316 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
317 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
318endef
319
320SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
321
322LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
323 linked_vars.skel.h linked_maps.skel.h
324
325LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \
326 test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c
327# Generate both light skeleton and libbpf skeleton for these
328LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c
329SKEL_BLACKLIST += $$(LSKELS)
330
331test_static_linked.skel.h-deps := test_static_linked1.o test_static_linked2.o
332linked_funcs.skel.h-deps := linked_funcs1.o linked_funcs2.o
333linked_vars.skel.h-deps := linked_vars1.o linked_vars2.o
334linked_maps.skel.h-deps := linked_maps1.o linked_maps2.o
335
336LINKED_BPF_SRCS := $(patsubst %.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
337
338# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
339# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
340# Parameters:
341# $1 - test runner base binary name (e.g., test_progs)
342# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
343define DEFINE_TEST_RUNNER
344
345TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
346TRUNNER_BINARY := $1$(if $2,-)$2
347TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
348 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
349TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
350 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
351TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
352TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
353TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
354TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS))
355TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
356 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
357 $$(TRUNNER_BPF_SRCS)))
358TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
359TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
360TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
361
362# Evaluate rules now with extra TRUNNER_XXX variables above already defined
363$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
364
365endef
366
367# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
368# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
369# $1 - test runner base binary name (e.g., test_progs)
370# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
371define DEFINE_TEST_RUNNER_RULES
372
373ifeq ($($(TRUNNER_OUTPUT)-dir),)
374$(TRUNNER_OUTPUT)-dir := y
375$(TRUNNER_OUTPUT):
376 $$(call msg,MKDIR,,$$@)
377 $(Q)mkdir -p $$@
378endif
379
380# ensure we set up BPF objects generation rule just once for a given
381# input/output directory combination
382ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
383$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
384$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \
385 $(TRUNNER_BPF_PROGS_DIR)/%.c \
386 $(TRUNNER_BPF_PROGS_DIR)/*.h \
387 $$(INCLUDE_DIR)/vmlinux.h \
388 $(wildcard $(BPFDIR)/bpf_*.h) \
389 | $(TRUNNER_OUTPUT) $$(BPFOBJ)
390 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
391 $(TRUNNER_BPF_CFLAGS))
392
393$(TRUNNER_BPF_SKELS): %.skel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
394 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
395 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
396 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
397 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
398 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
399 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=)) > $$@
400
401$(TRUNNER_BPF_LSKELS): %.lskel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
402 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
403 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
404 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
405 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
406 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
407 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=_lskel)) > $$@
408
409$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
410 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.o))
411 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
412 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
413 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
414 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
415 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
416 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
417endif
418
419# ensure we set up tests.h header generation rule just once
420ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
421$(TRUNNER_TESTS_DIR)-tests-hdr := y
422$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
423 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
424 $$(shell (echo '/* Generated header, do not edit */'; \
425 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
426 $(TRUNNER_TESTS_DIR)/*.c | sort ; \
427 ) > $$@)
428endif
429
430# compile individual test files
431# Note: we cd into output directory to ensure embedded BPF object is found
432$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
433 $(TRUNNER_TESTS_DIR)/%.c \
434 $(TRUNNER_EXTRA_HDRS) \
435 $(TRUNNER_BPF_OBJS) \
436 $(TRUNNER_BPF_SKELS) \
437 $(TRUNNER_BPF_LSKELS) \
438 $(TRUNNER_BPF_SKELS_LINKED) \
439 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
440 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
441 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
442
443$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
444 %.c \
445 $(TRUNNER_EXTRA_HDRS) \
446 $(TRUNNER_TESTS_HDR) \
447 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
448 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
449 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
450
451# non-flavored in-srctree builds receive special treatment, in particular, we
452# do not need to copy extra resources (see e.g. test_btf_dump_case())
453$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
454ifneq ($2:$(OUTPUT),:$(shell pwd))
455 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
456 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
457endif
458
459$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
460 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
461 $(RESOLVE_BTFIDS) \
462 | $(TRUNNER_BINARY)-extras
463 $$(call msg,BINARY,,$$@)
464 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
465 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.o $$@
466
467endef
468
469# Define test_progs test runner.
470TRUNNER_TESTS_DIR := prog_tests
471TRUNNER_BPF_PROGS_DIR := progs
472TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \
473 network_helpers.c testing_helpers.c \
474 btf_helpers.c flow_dissector_load.h
475TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
476 ima_setup.sh \
477 $(wildcard progs/btf_dump_test_case_*.c)
478TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
479TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
480TRUNNER_BPF_CFLAGS += -DENABLE_ATOMICS_TESTS
481$(eval $(call DEFINE_TEST_RUNNER,test_progs))
482
483# Define test_progs-no_alu32 test runner.
484TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
485TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
486$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
487
488# Define test_progs BPF-GCC-flavored test runner.
489ifneq ($(BPF_GCC),)
490TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
491TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
492$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
493endif
494
495# Define test_maps test runner.
496TRUNNER_TESTS_DIR := map_tests
497TRUNNER_BPF_PROGS_DIR := progs
498TRUNNER_EXTRA_SOURCES := test_maps.c
499TRUNNER_EXTRA_FILES :=
500TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
501TRUNNER_BPF_CFLAGS :=
502$(eval $(call DEFINE_TEST_RUNNER,test_maps))
503
504# Define test_verifier test runner.
505# It is much simpler than test_maps/test_progs and sufficiently different from
506# them (e.g., test.h is using completely pattern), that it's worth just
507# explicitly defining all the rules explicitly.
508verifier/tests.h: verifier/*.c
509 $(shell ( cd verifier/; \
510 echo '/* Generated header, do not edit */'; \
511 echo '#ifdef FILL_ARRAY'; \
512 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
513 echo '#endif' \
514 ) > verifier/tests.h)
515$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
516 $(call msg,BINARY,,$@)
517 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
518
519# Make sure we are able to include and link libbpf against c++.
520$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
521 $(call msg,CXX,,$@)
522 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
523
524# Benchmark runner
525$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
526 $(call msg,CC,,$@)
527 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
528$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
529$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
530$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
531 $(OUTPUT)/perfbuf_bench.skel.h
532$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
533$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
534$(OUTPUT)/bench: LDLIBS += -lm
535$(OUTPUT)/bench: $(OUTPUT)/bench.o $(OUTPUT)/testing_helpers.o \
536 $(OUTPUT)/bench_count.o \
537 $(OUTPUT)/bench_rename.o \
538 $(OUTPUT)/bench_trigger.o \
539 $(OUTPUT)/bench_ringbufs.o \
540 $(OUTPUT)/bench_bloom_filter_map.o
541 $(call msg,BINARY,,$@)
542 $(Q)$(CC) $(LDFLAGS) -o $@ $(filter %.a %.o,$^) $(LDLIBS)
543
544EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
545 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
546 feature \
547 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h no_alu32 bpf_gcc bpf_testmod.ko)
548
549.PHONY: docs docs-clean